Innovating approaches to the generation of intense magnetic field: Optimization of a permanent magnet flux source

The aim of this study is to design and optimise an original permanent magne t Aux source, in order to generate a magnetic field of several Tesla. One o f the innovating aspect of this project is the use of the ponctual dipole p rinciple (intense field) instead of the infinite dipole principle (homogene ous field). After the analytical model optimisation, the structure have bee n discretized to be realizable, using real magnet. An other innovating aspe ct is the magnetical and geometrical optimization of the combination of dif ferent hard magnetic material (Neodymium-Iron-Boron magnet) and also soft m agnetic material (Cobalt-Iron). The magnet configuration is optimised with the help of numerical simulation sofware developped in the LEG (DIPOLE-3D, FLUX2D et FLUX3D). The model of flux source creates a field over 4.3 T in a volume of diameter 6 mm and height 2.8 mm with an external diameter of 100 mm.